of toledo



A. E. BUC'HENBERG.

ENGINE STARTER.

APPLICATION FILED APR-14, I 919.

1,41 3,318. ed APR-18, 19221 I INVENTOR. Alvin EBucbenbeIy Y B "I I I Il A TTORNEY lToaZZ whom it may concera:

UNITED ST TES" PATENT O FICE.

; ALVIN BUCHENBERG, F TOLED O, OHIO, ASSIGNOR TO INDUSTRIAL RESEARCHCORPORATION,- OF TOLEDO, OEIQ, A CORPORATION OF'JJELAW'ARE,

ENGINE STARTER.

. aiasis.

a Specification ofLetters Patent. pm i m APR 18,l1922 =,App1icationfiledApril 14; 1 919. ,1 Serial No. 289,951.

:Be it. known-that I, ALVIN of Ohio,;have; invented certain new anduseful Improvements in .Engine- Starters, ofv whichl declare thefollowing to be a full,

clear, and exact, description.

This invention relates .toimprovements inwstarters for internalcombustion engines,

pandcconsists principally in the employment of an electro-magnet for:carrying the movable pinion which engages the fly-wheel,

saidselectro-magnet when energized moving toward; the flywheel, which iscomposed of amagneticpmatenial. a

i one ,offthe objectsof, the invention is the I provision; of .means forautomatically ena vision of means for accomplishing thewgear shifting:operation electro-magnetically.

.gaging and disengaging. the starting gears, 20.

:nstopped;

When the driving motor is started and Another object of the invention isthe pro- Another object is the provision of a single means for startingthe driving motor, and fordcompletinggthe .circuit. of theelectromagnet,. which means may be merely a switch where an electricmotor is used for starting. 7 7

Still another object is the mounting of the driving pinion in anintermediate position upon a lever-which is pivoted atone end, and hasat least one pole of the electromagnet at its other end, whereby thepull-of the magnet at the end of the lever produces a proportionatelystronger effect at the point I of the pinion mounting.

Other objects, and objects relating to details of construction, andeconomies of man- 7 ufacture will appear as I proceedwlth thedescription of that embodiment of the invention, which, for the purposesof the present application, I have illustrated in the ace ompanyingdrawings, in which:

V Figure I is it top plan v1eW partly in cross 7 section, showinganembodiment of my invention, a fragment only of the engine flywheel beingillustrated. g Fig. IIi sanend new of the invention as H seen from theleft in Fig. I.

Fig. III is across section taken substantially on the line III'III, Fig.I, and looking in the direction of'the arrows.

Fig. IV is a, diagram showing the pre- I gferred arrangement ofv E.-BUCI-IEN- BnRs, a- .citizen of the United States, residing at Toledo, inthe county of, Lucas and State electrical, apparatus and connections.

blmilar reference characters refer. to like parts ingeach of theviews.

Inthe drawing, 10 represents an electric 'IIlOtOIOfl/hQSQI'lBS woundtype, the armature shaft 11 hav ng fixed thereupon a pinion 12.

- two arms-of a yoke; 13;:straddlerthe (P1111011 12, and thesearmsare;drilled out to receive loosely the shaft 11,,which, therefore,

forms a pivot for said yoke. The latter has rotatably mounted therein asecond: shaft 14 uponwhich, 1s fixed a pinion115;meshing -w1ththe pinion12. The shaft 14am has That arm of the yoke 13. in which the pinion 16is mounted, "constitutes anielectromagnet. Near its :endspole, shoes 19extend towardthe fly-wheel 18, being shaped. upon rtheir vlower'surfaces to conformas nearly as ;;possible to theshape ofjtheadjacentsurfaces of therflywheel. ;The magnet coils 20 are Wound aroundthe poleishoesy19. .As

1 diagrammatically shown in'z Eigt IV, Lthese coils 20 maybe'arranged inseries with the motor 10, its field winding 21, a suitable source ofelectric current, such as a storage battery 22, and a switch 28. Whenthe switch 23 is closed a current passes through 1 the motor and throughthe coils 20 of the electro-magnet. As the latter becomes energized itmoves toward the fly-wheel, causing the pinion 16 to engage with theteeth 27. In order to retract the pinion 16 when current has ceased toflow through the coils 20, a tension spring 24 maybe attached to thefree end of the yoke 13, the opposite end of the spring being secured toany convenient support.

I Instead of the pinion 16, a drive wheel of some other type may beemployed if desired, and, similarly, the teeth 27 upon the fly wheel maybe omitted altogether, or, if desired, someother type of teeth may beused. Furthermore, the number of gears or pinions vin the yoke 13 may bedecreased or increased without departing fromthe spirit of myinvent-ion. I I

, Iam aware that the particular embodiment of my invention abovedescribed, and illustrated in the accompanying drawings,

is susceptible of considerable variation without departing from thespirit thereof, and therefore I desire to claim my invention broadly, aswell as specifically,'as indicated by the appended claims.

claim as my invention:

1. In combination with the fly-wheel of an internal combustion engine,said fly-wheel being built of magnetic material and provided with gearteeth along its periphery, a motor, a shaft therefor, an electro-magnetradially pivoted upon said shaft and capable of a limited amount ofswinging motion thereon towards and away from said flywheel, the polesof said magnet facing said fly-wheel and in juxtaposition therewith, apinion carried by said magnet and driven from said motor shaft, saidelectro-magnet when energized being drawn towards the said fly-wheeluntil said pinion meshes with the teeth on the fly-wheel.

2. In combination with the fly-wheel of an internal combustion engine,said flywheel being built of magnetic material and provided with gearteeth along its periphery, an electric motor, an electro-magnetpivotally mounted concentric to the axis of said motor to have a limitedswinging movement about that axis towards and away from said fly-wheel,the poles of said magnet facing said fly-wheel and in juxtapositiontherewith, a source of electric current, electrical connectionstherefrom to said motor and electro-magnet, a-pinioncarried by saidelectro-magnet and driven by said motor, and means for completing saidelectrical. connections.

3. In combination with the fly-wheel of an internal combustion engine,said flywheel being built of magnetic material and provided with gearteeth along its periphery, a motor, an electro-magnet pivotally mountedconcentric to the axis of said motor, the poles of which face sai-dfly-wheel and lie close thereto, a pinion mounted between the pivot ofthe electro-magnet and the outer one of said poles, and a drivingconnection between said pinion and said motor, said electro-magnet whenenergized being swung towards said fly-wheel about said axis until theteeth of the fly-wheel are engaged by said pinion.

a. In a drive mechanism, the combination of a driven member formed ofmagnetic material; a motor shaft; an electro-magnet mounted on the shaftfor radial pivotal movement thereabout; a gear carried by the electro-manet, and operatively connected to the shart; and means for magneticallyenergizing the electro-magnet and a portion of said driven member.

5. In a drive mechanism, the combination of a driven member formed ofmagnetic ma- 'terial; a motor shaft; an electro-magnet mounted on theshaft for radial pivotal movement thereabout; a gear carried by theolectro-magnet and movable into engagement with the driven member; saidelectro magnet being positioned in juxtaposition with the engine memberbut non-contractible therewith.

In testimony whereof, I affix my signature.

ALVIN E. BUCHENBERG.

